航空学报 > 2013, Vol. 34 Issue (11): 2510-2519   doi: 10.7527/S1000-6893.2013.0345

两种超声速翼身激波阻力优化方法对比研究

关晓辉, 宋笔锋, 李占科   

  1. 西北工业大学 航空学院, 陕西 西安 710072
  • 收稿日期:2013-03-26 修回日期:2013-07-23 出版日期:2013-11-25 发布日期:2013-07-31
  • 通讯作者: 李占科,Tel.:029-88495914 E-mail:lzk@nwpu.edu.cn E-mail:lzk@nwpu.edu.cn
  • 作者简介:关晓辉 男,博士研究生。主要研究方向:飞行器总体设计。 E-mail:gxh87222@163.com;宋笔锋 男,博士,教授,博士生导师。主要研究方向:飞行器总体设计,飞行器可靠性工程。 Tel:029-88495914 E-mail:bfsong@nwpu.edu.cn;李占科 男,博士,副教授。主要研究方向:飞行器总体设计。 Tel:029-88495914 E-mail:lzk@nwpu.edu.cn

Comparative Study of Two Supersonic Wing-body Wave Drag Optimization Methods

GUAN Xiaohui, SONG Bifeng, LI Zhanke   

  1. School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2013-03-26 Revised:2013-07-23 Online:2013-11-25 Published:2013-07-31

摘要:

使用类别形状函数变换(CST)参数化方法对超声速翼身组合体的机身和机翼外形进行参数化表示,在充分利用机翼与机身之间气动干扰的基础上提出了基于远场组元的机翼和机身激波阻力协同优化(CoFCE)算法,并对其计算量和优化结果同机翼和机身外形交替进行优化的扩展的远场组元(EFCE)激波阻力优化方法开展对比。研究结果表明:随着参数数量的增加,CoFCE算法的计算量更大,其优化效果明显优于EFCE算法;经过CoFCE方法优化的翼身组合体超声速巡航状态下的升阻比有大幅提高。

关键词: 参数化, 超声速飞行器, 激波, 减阻, 外形优化

Abstract:

In this paper the wing and fuselage shapes of a supersonic wing-body are represented by class-shape-transformation (CST) parameterization, and a method of supersonic wing-body wave drag co-optimization based on far-field composite elements (CoFCE) is proposed by taking advantage of the aerodynamic interference of the wing and the fuselage shapes. Optimization effect and computation cost comparisons between the CoFCE method and the extended far-field composite element (EFCE) wave drag optimization method are carried out. The study demonstrates that as the parameter number increases more computation costs are required and significantly better optimization results can be achieved by the CoFCE method than by the EFCE method. The CoFCE optimizes wing-body yields higher lift to drag ratios in supersonic cruise conditions.

Key words: parameterization, supersonic aircraft, shock wave, drag reduction, shape optimization

中图分类号: